It would be nice. It's the only portable system really missing from the 3DS VC that I'd want.

“A thing may be too sad to be believed or too wicked to be believed or too good to be believed; but it cannot be too absurd to be believed in this planet of frogs and elephants, of crocodiles and cuttle-fish.”
― G.K. Chesterton

That's true. The Nintendo 3DS would have all of the best handhelds from the fourth to the sixth generation if it had the Game Boy Advance, Atari Lynx, and Neo Geo Pocket Color. SNK is still releasing games for the Wii Virtual Console, so it is likely that they will come with the Neo Geo Pocket Color and Neo Geo console.